Via the BBC:
Benito Martinez says he is 123 years old, while Cuban experts believe he is just four years younger than that.
If that is proved, he will comfortably break the world record. The current record holder is 113 and lives on the Caribbean territory of Puerto Rico.
The Cuban says he was born in Haiti in the 19th century. He says his long life is down to no cigars or alcohol - but good food and a fair share of women.
You don't have to be completely raw to live long and still be relatively healthy, however, you do need to practice caloric restriction. Want to join the 120 club? More on caloric restriction: How to live longer.